Fixed share page issue.

lib/middleware.js

@@ -29,7 +29,7 @@ export const useAuth = createMiddleware(async (req, res, next) => {
   const token = await getAuthToken(req);
   const shareToken = await getShareToken(req);
 
-  if (!token) {
+  if (!token && !shareToken) {
     return unauthorized(res);
   }